2000 up grand am radio install problem

do these cars have a factory amp turn on wire to be hooked up after u install or before i should say a aftermarket head unit. my buddy just left and he said when the radio is on zero distortion comes out of the speakers i dont know (help)

anyone

sorry my question was do these cars have factory amps and if they do does it need to be hooked up there is a wire on the harness that has amp wire on it not to b confused with the remote turn on wire for theamp for subs the factory speakers play, i dont know what im trying to ask hear.when the radio is turned down to zero the subs are still thumpin i still didnt get to see what was wrong with it yet the car left im looking at it friday but this is what there explaining to me what its doing sorry for the length of the post

If you don't know if there is a factory amp pull the carpet back on the drivers side in the trunk and you should see it (the grand Am I had was a 2002 with the 8 speaker Monsoon system). If the is an amp then there is a wire you have to splice in with your harnes to turn it on. I don't now about the 2000 GA but I had to relocate the factory deck to the trunk with a special harness because if you don't there is a possibility the airbags will deploy unexpectedly. Hope this helps you.it's a wise monkey who never monkeys with another monkey's monkey